Earth's Structure (Layers of earth
crust
the outermost part of the lithosphere, either oceanic or continental
oceanic crust
the portion of Earth's crust that is usually below the oceans and not associated with continental areas, thinner and higher in density than continental crust and basaltic rather than granitic in composition
inner core
A dense sphere of solid iron and nickel at the center of Earth; under the most pressure, it does NOT move
lithosphere
A rigid layer made up of the uppermost part of the mantle and the crust.
movement of outer core responsible for
Earth's changing magnetic field
Layers of the earth from the inside out
Inner core, outer core, mesosphere, asthenosphere, and lithosphere
Mantle
Largest layer of the earth; made up of liquid and solid magma
As you go deeper into the Earth
Temperature and pressure increase
continental crust
The portion of the earth's crust that primarily contains granite, is less dense than oceanic crust but is thicker
convection
The transfer of heat by the movement of a fluid or gas in a current
three main layers of the Earth
crust, mantle, core
powers a convection current
heating and cooling, changes in density, and the force of gravity
outer core
moves because it is liquid/molten metal (iron and nickel)
seismic waves
produced by Earthquakes; helps geologists indirectly learn about Earth's interior